Printing-plate holder



Feb. 16 1926.

E. E.v THIEL PRINTING PLATE HOLDER Filed August 22, 1924 ATTUF/Vf/VS.

citizen oi: the United States, and

Patented Feba 16, i926.

UNTE@ ltAvlEtill OFFICE.

EMIL E. THIEL, OF OINCINNAT, OfO, ASSIGNOR TO lUlli-31E RNTING MACHNERY COMPANY, OF CINCINNATL OHIO, A CCRORATION OF OHIO.

PRNTNGPLATE HOLDER.

'Application filed. August 22, 19a-l. Serial No. 733,644.

To all /ioionz/ t 11mg/ concern:

Be it known that l, EMU, E. Titien, a a resident oi Cincinnati, in the county of Hamilton and State ot Ghio, have invented certain new and useful Improvements in Printing- Plate Holders, of which theV following is a full, clear, and exact description, referenc being had to the accompanying drawing, forming part of this specilication.

My invention relates to devices adapted for use with a bed, :tor retaining printing plates and the like thereon. lt further re Y lates more particularly to such devices where used with printing plate beds having numerous holes therein, into which the devices ot my invention are dropped.

Drop-in hooks as such devices are termed commercially, usually comprise a jaw, and a holder, the latter being adapted `tor dropping into the holes or channels in a'printing plate bed, and some hind ot means resulting in the operator being able to adjust the position of the parts so as to bring the jaw up against a' printing plate thereby holding the plate down on the bed, and also holding it against displacement in the plane of the bed.

' It is the object ot my invention to provide a carrier which has a rin foundation, and snug tit to the bed hole in which it is placed, with spring elements for holding it in place against dislodgment.

It is my object to provide for a simple mode of assembling the springs withthe carrier and retracting the springs when the carrier is to be removed. y It isv also my object to provide for a double support for the jaw element in the carrier, designed to give a very strong and even action to the jaw, and a line of application of force to th-e jaw which assures ar firm and non-chattering engagement with the plate.

I accomplish my object by that certain construction and arrangement of parts to be hereinafter more specifically pointed out and claimed.

In the drawing:

Figure l is a top plan view of one oi the devices.

Figure 2 is a side elevation of the device,

- when in place in the bed of a press or the like.

.Figure 3 is a 'liont elevation ol the holder complete.

Figure Figure 3.

Figure 5 is a perspective oi the carrier.

yjhe bed oi a press is indicated at l having holes 2 therein for the reception of the drop-iii hooks. The holes are enlarged at E near the base thereof. to provide shoulders tor engagement with the spring holddown devices ot the carrier.

rlie carrier is formed with a base 4, which is curved, front and back to engage snugly but slidably iii the hole in the press bed. ilith a different shape of hole, the base wouldV be formed to lit such hole as happened to be user. There ai'e uprights 5 on the have intcrspaccd for the reception ot the stein portions ot the iaiv and between which the jaw stein will fit snugly but movably.

The uprights are formed with holes 6 for reception ot' a pivot pin 6 ior the pivoted bearing block, and with holes 7 for reception ot the pivot pin 7 'for the legs of the jaw stein.

fit the tops the uprights are i'oinied with a channel 8 on .each side having a beveled wall Sa. as a base and a lieif 9 is made at the tops. of the nprights, intersecting the upper ends ot the channels.

The hold-down springs are termed with T-heads l0 to seat in the said kerfs, bodies ll which extend down through the channels, and thence along the sides ot' the uprights, and turned-out ends 12, which engage under the shoulders on the holes ol the bed.

The lateral width of the carrier is such that when the two springs are forced closely against the sides of the carrier, the latter can then be dropped down through the selected hole in the bed. 1When the springs have been started down, they are released by the operator, and their ends 12 will snap under the shoulders, when the carrier has been thrust down so as to be level with the top ot the bed.

To remove the carrier, aI tool having two blades is thrust between the sides of the uprights and the wall of the hole in which the carrier is located, guided by the channels in the top of the sides of the carrier, and by this means, the spring brought close to the sides again, whereupon they are freed l is a section on the line ot from the shoulder at the base of the bed hole, and the carrier may be lifted out.

The jaw 13 is of usual type and has a stein formed to lit within the uprights of the carrier.v One portion of the stern as at 14- extends down to receive the pivot pin 7a, and the other portion of the stein has a threaded socket 15 for the screw 16. There is a hole 17 extending down through the top of 'the jaw to permit atool to be inserted for engaging the squared socket 18 in the head ofthe screw. rEhe screw has a special button-like head 19, which engages in a socket 20 f1 .rined in the pivot bearing block 21. This block is mounted between the uprights by nieans of the pin (5a.

As so constructed the holder is dropped into a press bed hole, with the jaw facing the plate to. be held in place. The operator then inserts a tool and turns the screw,

which forces the jaw toward the printing plate.

As the screw passes down through the jaw stein, and tilts the jaw, the bearing block swings on its pivot pin, thereby assuring firm bearing for the jaw, and irnparting thrust thereto on a line which will tend toy hold the carrier firmly in place against what may be terined the baclr wall of the hole into which it was dropped.

-Having thus described my invention,

:what l claim as new and desire to secure by Letters Patent, is

1. A holding device for printing plates comprising a jaw a carrier, means for inox/ably mounting the jaw in the carrier,

` said carrier having spring tongues mounted comprising a jaw and a carrier having bottom and sides, means for inovably mounting the avv in the carrier, said carrier having lierfs in the top thereof, spring having T-ends set in said kerfs, and extending downwardly along the sides of the carrier, and having turned-out ends adapted to pass down. through a press bed, when forced vagainst the sides of the carrier, and tol spring out into engagement with the press bed, when the carrier is thrust boinc into suoli bed.

3. ln a device of the character described the combination with a holder, a jaw, means for niovably mounting the jaw in the holder, an adjusting screw movable lengthwise through the jaw having an extended end, and' a pivoted element in the carrier, having an aperture adapted to receive the end of' the screw, for the purpose described.

4. In a device of the character described the combination with a holder, a jaw, means for niovably inoui'iting the jaw in the holder, an adjusting screw movable lengthwise through the jaw having an extended end, and a pivoted element in the carrier, hav ing an aperture adapted to receive the end of the screw, for the purpose described, said screw and pivoted elenient having head and socket engagement between each other.

ln a device of thel character described the combination with a holder having base and sides, a jaw having a stein, held on a pivot pin between the sides, a screw mounted in the stem, and moving lengthwise thereof, and a bearing block pivoted .in said holder, against which said screw thrusts when turned within the stein, for the purpose described.

EMIL E. THEL. 

